Grill guard of an automobile



FIG. 1 is a front elevation view of a grill guard of an automobile,showing our new design;

FIG. 2 is a front right perspective view;

FIG. 3 is a front left perspective view;

FIG. 4 is a right side elevation view;

FIG. 5 a left side elevation view; and,

FIG. 6 is a top plan view.

The broken lines shown are for illustrative purposes only and form nopart of the claimed design.

The ornamental design for a grill guard of an automobile, as shown anddescribed.